somebody's eyes are out on stalks (informal) also somebody's eyes are popping out of their head (informal)20591

somebody's eyes are out on stalks (informal) also somebody's eyes are popping out of their head (informal)
if someone's eyes are out on stalks, they are looking at someone or something in a way that shows that they think that person or thing is extremely surprising or attractive
Usage notes: In funny drawings, people and animals are often drawn with their eyes coming out of their head to show that they are very surprised.
You should have seen Pete when Bec turned up in her short skirt. His eyes were out on stalks.